[OpenWrt-Devel] [lantiq] help in supporting FRITZ!BOX 3272 (Fritz_Box_HW198))

[Enrico Mioso]

Dear Bjorn,
Thank you very very much! You've been always helpful tome... :)

thank you for pointing me at your work - it has been very useful. I was using as references sources from the TP-Link Archer D2.

thanks to your hints and work, I arrived to some of the conclusions you did. Your device was booting, instead in my case I am not able to get it past the PMU issue.
And even ignoring this error I end up having issues with the GPTU.

I guess the FRITZ!BOX3272 is maybe of another family of devices. don't know, running out of ideas.
Any hint of what I might try next?
I didn't find GPL code for this device from AVM - but maybe it's just me. Any help would be really apreciated.

BTW - PMU activation fails in sysctrl.c, in function
static int pmu_enable(struct clk *clk) ...

Enrico

On Wed, 28 Aug 2019, Bjørn Mork wrote:

> Date: Wed, 28 Aug 2019 18:52:38
> From: Bjørn Mork <bjorn at mork.no>
> To: Enrico Mioso <mrkiko.rs at gmail.com>
> Cc: Martin Blumenstingl <martin.blumenstingl at googlemail.com>,
>     Hauke Mehrtens <hauke at hauke-m.de>, openwrt-devel at lists.openwrt.org
> Subject: Re: [OpenWrt-Devel] [lantiq] help in supporting FRITZ!BOX 3272
>     (Fritz_Box_HW198))
> 
> Enrico Mioso <mrkiko.rs at gmail.com> writes:
>
>> I am still trying to port a FRITZ!BOX3272 device to OpenWRt.
>> I tried to grab as much informations as I could, but I am arriving to the conclusion I hould be doing something really wrong.
>>
>> First of all, the kernel panics due to a data abort at
>> linux-4.19.66/arch/mips/lantiq/xway/sysctrl.c, line 478
>> /* make sure to unprotect the memory region where flash is located */
>> ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_BUSCON0) & ~EBU_WRDIS, LTQ_EBU_BUSCON0);
> ..
>> [SYSTEM:] AR10 on 500MHz/250MHz/250MHz
>>
>> ..
>> Eva_AVM >
>>
>>
>>
>>
>>
>>
>>
>> ......................................................................................[    0.000000] Linux version 4.19.66 (mrkiko at mStation) (gcc version 7.4.0 (OpenWrt GCC 7.4.0 r10863-e1dcfe02b2)) #0 SMP Mon Aug 26 16:21:13 2019
>> [    0.000000] SoC: xRX300 rev 1.2
>
>
> Right, so this is AR10/xRX300. Been there, trying to get a D-Link
> DWR-956 running, and gave up without getting the T-Shirt ;-)
>
> I believe the problem you are hitting right now is caused by wrong
> address for the EBU.  It is not at 0x1E105300 like for the VR9 etc, but
> at 0x16000000 on the AR10.
>
> So change this:
>
> 		ebu0: ebu at e105300 {
> 			compatible = "lantiq,ebu-xway";
> 			reg = <0xe105300 0x100>;
> 		};
>
> into
>
> 		ebu0: ebu at 6000000 {
> 			compatible = "lantiq,ebu-xway";
> 			reg = <0x6000000 0x100>;
> 		};
>
>
> I was stuck the same place for quite some time....
>
> I pushed my abandoned DWR-956 branch here now:
> https://github.com/bmork/OpenWrt/tree/dwr-956-wip
> in case it is of any use to you.
>
> Note that this branch is a terrible mess of Work-in-Progress, meant for
> my eyes only.  And even I can't make much sense out of it anymore.  So
> you might be better off just ignoring it.  Your call.
>
>
>
>
> Bjørn
>
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